-71.09% is the change from 934 to 270
Calculation steps:
[( 270 - 934 ) ÷ 934] x 100 = -71.09%
Formula
Percentage change = [(270 - 934) / 934] x 100
Subtract the new number by the original number
270 - 934 = -664
-664 ÷ 934 = -0.7109207708779444
-0.7109207708779444 x 100 = -71.09%